Dynamic-mechanical analysis and SEM morphology of wood flour/polypropylene composites

作     者：GUO Chui-gen SONG Yong-ming WANG Qing-wen SHEN Chang-sheng 

作者机构：MOE Key Laboratory of Bio-based Material Science and Technology Northeast Forestry University Harbin 150040 P. R. China 

出 版 物：《Journal of Forestry Research》 (林业研究（英文版）)

年 卷 期：2006年第17卷第4期

页      面：315-318页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This paper was supported by National Foundation of Application of Agricultural Scientific and Technological Achievements (2006GB23600450) 

主　　题：Wood flour Polypropylene Composites Dynamic-mechanical analysis 

摘      要：A study was conducted to investigate the effects of compatibilizers, including Maleic anhydride grafted polypropylene （MA-PP） and maleic anhydride grafted ethylene-propylene-diene copolymer （MA-EPDM）, on wood-flour/polypropylene （WF/PP） composites. WF/PP composites were prepared by direct extrusion profiles using a twin-screw/single-screw extruder system. DMA analysis showed that the loss factor of composites decreased and the storage modulus improved in the presence of MA-PP, which indicated much better interfacial adhesion between the PP matrix and wood flour filler than in the absence of compatibilizer. Morphological feature based on SEM observation showed that MA-PP and MA-EPDM improved the dispersion of the wood particles in the plastic matrix. MA-EPDM is a soft segment, although it improved the interfacial adhesion, storage modulus decreases with adding of MA-EPDM. As compatibilizer of wood-flour/polypropylene composites, both DMA analysis and SEM feature proved that MA-PP was superior to MA-EPDM.